Niche Overlap Determination Through Habitat Suitability Models: A Management Tool for Native Birds of the Argentinean Pampas

Summary. In Argentina, predominantly in the Pampas ecoregion, the natural rangelands have increasingly been replaced by crops. Avifaunal studies have shown that the population density of several species decreased as the proportion of cropland in the landscape increased. The Greater Rhea Rhea america...

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Detalles Bibliográficos
Publicado: 2018
Materias:
Agroecosystem
Ashy-Headed Goose
Ecological Niche
Grassland
Greater Rhea
Upland Goose
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05707358_v65_n1_p25_Pedrana
http://hdl.handle.net/20.500.12110/paper_05707358_v65_n1_p25_Pedrana
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_05707358_v65_n1_p25_Pedrana
record_format dspace
spelling paper:paper_05707358_v65_n1_p25_Pedrana2023-06-08T15:42:41Z Niche Overlap Determination Through Habitat Suitability Models: A Management Tool for Native Birds of the Argentinean Pampas Agroecosystem Ashy-Headed Goose Ecological Niche Grassland Greater Rhea Upland Goose Summary. In Argentina, predominantly in the Pampas ecoregion, the natural rangelands have increasingly been replaced by crops. Avifaunal studies have shown that the population density of several species decreased as the proportion of cropland in the landscape increased. The Greater Rhea Rhea americana and two migratory sheldgeese: The Upland Goose Chloephaga picta and Ashy-headed Goose Chloephaga poliocephala, are medium-large native species that have been common and sympatric inhabitants of the Pampas ecoregion. We aimed to analyse and compare the current ecological niches occupied by the three species during the non-breeding season in the southern Pampas of Argentina, the region where their original distributions overlapped, using Ecological Niche Factor Analysis. The three species showed high global marginality values, indicating that they occupied only a specific subset of environmental conditions of those available across the region. Suitable areas for Greater Rhea were located in the west and south of the study area, overlapping grazing lands and native habitats. The three species responded to landscape composition and configuration, as indicated by the low proportion of areas with suitable conditions for these medium-large birds. Suitable areas for Ashyheaded and Upland Geese were especially concentrated in the eastern part of the area and suitable areas for Upland Goose were more widespread than those suitable for the Ashy-headed Goose. We provide compelling evidence of low overlap between the ecological niches of the three species in the southern Pampas, which highlights the need for specific management strategies to ensure the conservation of these emblematic species.-Pedrana, J., Bernad, L., Maceira, N.O. & Isacch, J.P. (2018). Niche overlap determination through habitat suitability models: A management tool for native birds of the Argentinean Pampas. Ardeola, 65: 25-40. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05707358_v65_n1_p25_Pedrana http://hdl.handle.net/20.500.12110/paper_05707358_v65_n1_p25_Pedrana
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Agroecosystem
Ashy-Headed Goose
Ecological Niche
Grassland
Greater Rhea
Upland Goose
spellingShingle Agroecosystem
Ashy-Headed Goose
Ecological Niche
Grassland
Greater Rhea
Upland Goose
Niche Overlap Determination Through Habitat Suitability Models: A Management Tool for Native Birds of the Argentinean Pampas
topic_facet Agroecosystem
Ashy-Headed Goose
Ecological Niche
Grassland
Greater Rhea
Upland Goose
description Summary. In Argentina, predominantly in the Pampas ecoregion, the natural rangelands have increasingly been replaced by crops. Avifaunal studies have shown that the population density of several species decreased as the proportion of cropland in the landscape increased. The Greater Rhea Rhea americana and two migratory sheldgeese: The Upland Goose Chloephaga picta and Ashy-headed Goose Chloephaga poliocephala, are medium-large native species that have been common and sympatric inhabitants of the Pampas ecoregion. We aimed to analyse and compare the current ecological niches occupied by the three species during the non-breeding season in the southern Pampas of Argentina, the region where their original distributions overlapped, using Ecological Niche Factor Analysis. The three species showed high global marginality values, indicating that they occupied only a specific subset of environmental conditions of those available across the region. Suitable areas for Greater Rhea were located in the west and south of the study area, overlapping grazing lands and native habitats. The three species responded to landscape composition and configuration, as indicated by the low proportion of areas with suitable conditions for these medium-large birds. Suitable areas for Ashyheaded and Upland Geese were especially concentrated in the eastern part of the area and suitable areas for Upland Goose were more widespread than those suitable for the Ashy-headed Goose. We provide compelling evidence of low overlap between the ecological niches of the three species in the southern Pampas, which highlights the need for specific management strategies to ensure the conservation of these emblematic species.-Pedrana, J., Bernad, L., Maceira, N.O. & Isacch, J.P. (2018). Niche overlap determination through habitat suitability models: A management tool for native birds of the Argentinean Pampas. Ardeola, 65: 25-40.
title Niche Overlap Determination Through Habitat Suitability Models: A Management Tool for Native Birds of the Argentinean Pampas
title_short Niche Overlap Determination Through Habitat Suitability Models: A Management Tool for Native Birds of the Argentinean Pampas
title_full Niche Overlap Determination Through Habitat Suitability Models: A Management Tool for Native Birds of the Argentinean Pampas
title_fullStr Niche Overlap Determination Through Habitat Suitability Models: A Management Tool for Native Birds of the Argentinean Pampas
title_full_unstemmed Niche Overlap Determination Through Habitat Suitability Models: A Management Tool for Native Birds of the Argentinean Pampas
title_sort niche overlap determination through habitat suitability models: a management tool for native birds of the argentinean pampas
publishDate 2018
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05707358_v65_n1_p25_Pedrana
http://hdl.handle.net/20.500.12110/paper_05707358_v65_n1_p25_Pedrana
_version_ 1768545097343827968

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